A Fool's Errand

You will immediately be transported to New York at the beginning of sequence 8. As soon as you meet up with Connor, he will tell you to chase down the sentry while he fights off the enemies. The sentry is a lot slower than Aveline so this should be easy.

Full Synch

Climb the frozen waterfall in less than 1 minute

The path up the waterfall is quite distinct so this shouldn't be a problem. They give you more than enough time to figure it out too so don't worry about missing this optional objective. The only part that might be tricky is right afte rthe first set of rocks, you need to run left to climb farther up. The rest is mostly just holding the joystick up with the occasional push to the side. Remember that you can always reload the last checkpoint and reclimb the waterfall if you don't get it the first time.

After you climb the waterfall, follow the path shown to you by the cutscene. Once you reach the top of the hill, you will be attacked by a group of enemies. REMEMBER TO LOOT THE TREASURE CHEST for 2000 Money after killing the enemies because you will not be able to travel back to New York to get it without replaying the entire mission.

Once you reach the bridge, free run your way to the huge gap. You will then need to equip the whip and use it to jump across. Once you get across, interact with the plank so that he can continue following you. There will be two enemies on the way to your next waypoint.

When you gain control of Aveline, you are going to want to run up the rocks and onto the tree branches. Free run through the trees to find a way into the fort. This should be pretty self explanatory because the cutscene already showed the path through the trees. At the very last branch, you are going to want to equip the whip again to swing into the fort.

ONCE YOU ENETER THE FORT, REMEMBER TO GRAB THE SECOND TREASURE CHEST BEFORE COMPLETING THE MISSION. To find it, run straight from where you enter and take your first left so that you run through the cabin. Continue following the wall on your left side until you go through a second cabin. After you exit the second cabin, take a left and loot the chest right in front of you for another 2000 Money.

Navigating the fort should be pretty easy since you don't have to run into the middle and the enemies are not very strong. Once you reach the watch tower, Aveline will confront Davidson (who is actuall George, the slave that she helped free in the last Sequence). After the cutscene, Davidson and two other guards will attack you. The two guards should be very easy to beat, but Davidson might be a little tricky if you are new to Assassin's Creed. A trick that I've picked up for Assassin's Creed Liberation HD is that if you are battling a strong enemy or having trouble with a boss, simply use the whip to throw them to the ground and stab them while they are down. This will quickly and efficiently end the fight.

Once you complete the fight, George/Davidson will run out of the tower after hearing a large explosion, locking Aveline in the tower. You will then have one minute to climb out of the tower. It might seem like the window should be used to climb, but you are actually looking for cracks and planks sticking out of the wall. Some of these cracks and planks can be hard to see, but you should have plenty of time to climb all the way up in one minute.

Aveline will then perform a Leap of Faith off the watch tower and shoot a gunpowder barrel as George tries to ride off. He doesn't tell her exactly who the Company Man is, but Aveline seems to figure it out from his clue. When the cutscene ends, the mission is over and you return to New Orleans.